Mining-machine.



l H. A. KUHN & W. W. MAGPARRBN.

MINING MACHINE.

APPLICATION FILED NOV. 30, 1908.

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WTNE sas y wym/ H. `A. KUHN n W. W. MACPARREN.l MINING MACHINE. I. v` vAPPLICATION FILED NOV. 30, 1908. 1 1 07,239, Patented Aug. 11, 191L 5SHEETS-SHEET 2.

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FIG. 3.

INVENTORS 'Y A. KUHN & W. W. MACPARREN` MINING MACHINE.

APPLICATION ILBD NOV. 30, 1908. 1, 1 07,239. PatenteaAug. 11, 1914 5-BHEBTS-SHEIST 3.

m 55 '47 48 Flam.. F1 5B H. A. KUHN & W. W. MAGFARRBN.

' MINING MACHINE.. APPLICATION FILED NOY. 30, 1 908.

Patented Aug. 11, 1914 E! SHEETS-SHEET 1.

INVENToRs 1 q du' ssss `iuie'neee.

"UNITED .STATES PAIEIT'I OFElCE.

MERY A. KUHN AND WALTER W. MACFARBEN, :F PTTSBUEGrH, .PENNYLVAN;

SAB) MAGERREN .ASSIGNOR TG SAD KUHN.

Minmemnennm Speelcetion of Letters Fatent.

Patented firing. il, i'fltit.

[o all whom 'it may concern.'

Be it known that we,. l{ennr A. Kumi I` and WAmnn'W; hftecrinnnmcitizensof the f and useful improvements in Mining-Me front end. of the machine.

chines, of which the following is n specificetion. A A

Our invention relates to a. class of mining machines which is adapted tomine the full thickness ot' the coni seein et once, end clislodge thecoal from ite native beol'without the use cf ex Jloslvee.

The speeilil to provide e machine which is anpted to Work under evariety ci conditions, Such as cutting entries orrooins; which is strongand substantiel, 'simple in operation, :imi readily controlled.

Further obliects of our invention will be specifically pointed outhereinafter.

Referrine to thedrnwings, Figure l is a plan view showin vthe inechinemaking n cut across the entici' en entry or narrow room. Fig. 2 .isasiiie elevationot the saine. Fig. 3 is a, 4side elevation partly insection oi the Fig. #i is an ele- 'vetion of the 'vertical sew on themachine. Fi 5 is :i sectional elevation of one of' the cu ters of seidsew. Fig. G is e plan View of the saine. Fig. 7 is e. sectionalelevation through n. portion ci said seu' and its driving shaft. Fig. Sis e. section et right :ingles to vseici sew, shoving the width of cutmatie thereby. Fig. 9 is e sectional side elevation of the rearpropelling jack, the clamping jack, and rear axle. Fig. l() is o.sectional end elevation on theline l-fl of Fig. 9. Fig. ll is nsectional ele vtime through the entry showing the out mede by themachine. Fig. l2 is n Side elevation partly in section of e modifiedforni of head for the machine. Fig. i3 is n front. elei'f'ntion of thesuine; and, lfig. l-l is a. rear end elevution ci' the rent axle entipart et the clamping, zich. Fig. l5 is a (litigi-inn of the variouspressure operated meehnnisn'ls :intl their pipe connections The machineconsists oi n structural ,fi-inne l, at the forward end of which theremounted n "listing 2, haring the bearings and 4, containing the bushingsMounted in the bearing 3, is c. shnt't (i, having n iunge 7, to which issecured the top saw 8. llt the lower encl of the shaft (l there issecured n c objects ot our invention are bevel gear 9. Within thebeez-inge is mount-1 ed n shaft 10, having e. tln'nge il, 'to which issecured the bottom sew i2. At. the upper end of the shaft l() there issecured e. bevel geel' i3. Between the bevel gears 9 and 13 is thehearing 14, containing the bushing; l5 end the shaft 16, upon which ismountecl the bevel gear 1 7, which meshes with the bevel gears 9 und i8.utsicle the bevel gear 17 on shaft 1G is supplied the ilzinge i8, towhich is secured the vertical sew 19. tween the iiange 18 and` the bevelgear l?, the shaft 16 is supplied with e. number of cut-ters 2G insertedtherein. These cutters 2O are preferably arranged in the form of one or`more helices running around the shaft for e puroose'which will beexplained hereafter. 'I e shaft i6 extends buck through the bearing 2landA `hns secured. to its rear end :i spur gear :22, meshing;r with thepinion 23 on :i shaft Qf-l supported. in the bearings 25 and 2G.`leeu'recl to the rear cnil ci' shaft Q4 is n spur gear 27, which mesheswith the armature pinion QS of the motor A shaft is extended rearwardlyfrom the motor to n bearing 3l. This shaft has loosely mounted upon itthe bevel pinion 32, which nny be connected :it will to the sli-.ift 30by 'the clutch the bevel gezir 33 mounted upon n shaft 34, upon the endsof which are mounted the sprockets 35. These sprockets ectufite thechains 3G, which extend beck Isind pass over sprockets 37 which aresecured to the rear' truck Wheels 38. Between motor 29 and .clutch 33there are mountedv on the shaftil() e pair of eccentrics 39,'whichoperate the pistons of :in nir coinpressor Ai() secured to 'ie freine l.The rear axle fll is preternhly meile ot' enst metal having' thejournals 42 to receive the truck Wheels 38. The :ixle 4l hns e holethrough the center to receive the lower end of the jack cylinder 43 ande. flange 44 on the jack cylinder t3 beers upon lugs 45 on the axle 4l.The incl( eylin der 43 is :L fluid pressure cylinder of :my suitableconstruction having' zin upper pl un ,ger 45 with ufpointecl end 4.6unil n lower plunger #i7 with c. pointed end 4S. Upon the application offluid pressure the plungers 45 und 47 nieve out of the jack cylinder 4821ml the points L.LG und fit1 are ei'nbeijldcil respectively in the roofand floor of the inine. Upon release oi' the fluid pressure,

he bevel pinion 32 ineshes with the plungers 45 and 47 move dowii andup' vrespecti'vel so' as to disengage the points 46and 48 rom the coal.We have not illus- .trated or described the construction of this `)ackin detail as it may be o'f numerous forms. A construction suitable forthis puri pose is shown in a copending application ourselves' andHerbert K. Knopf led b her 21st, ,1908, bearing Serial No.

Novem The jack cylinder 43 is supplied with the lugs 49, to whichvarebolted one end of the channels 50 by bolts 51. The rear lower surfacesof these channels 50-bear on flange 44, which in turn rests on lugs onthe axle 41. The channels are combined with' plates 52 to form abox-shaped section or slide, which may be designated as a whole by thenumeral 53. This slideA 53 is adapted to move longitudinally of themachine within another box formed of the channels 5ft-and the plates 55,whichare secured lto the cross channels 56 by angles 57, these crosschannels being in turn secured to the frame 1 ofthemachine. Within theslide 53 is secured the fluid pressure cylinder 58, having the piston59, cylinder head 60, piston rod 61, and the stuing box 62. The

forward end of the iston rod 61 is flanged as at 62, and bolte to across beam 63 by bolts 64. The cross beam 63. is secured'to the frame 1.of the machine. It will be ob- .vious that When'fluid pressure isadmitted to the cylinder 58 between the piston 59 and cylinder head 60,as by the opening 65, the slide 53, the clamping jack 43, the rear axle41, and truck.- wheels 38 will be shoved bodily away from the frame ofthe machine,

1, and that if the clamping jack 43 is also under fluid pressure at thesame time so that it resists the thrust of the cylinder 58, lthen thewhole machine, except the clamping ack and connectin parts, will bemoved forward. The.' drive c ains 36 are adapted to propel the machinefrom place to place in the mine and are to be taken olf when the machineis fed against the coal by the action of the cylinder 58.

At. the front end of the machine, adjacent to the main casting 2, thereare placed four channels 66, secured to and lforming a lweight to anaxle-housing 74, having thebearings 75. Within these bearings is mountedthe axle 76, to .the outer ends of which are lsecuredthe front truckwheels 77, and a boss 78 `is formed on the axlehousing 74 to' receivethe lower end of the pin 71, which is firmly secured thereto by asmallerpin 79. It is evident from the above construction that the admission offluid pressure to either of the cylinders 67 will cause the plunger 68to actuate the pinion 70, and cause the pin 71 to twist the axle-housing74 and truck wheels 77 in a circle centeredon the pin 71. Theconstruction of the cylinder 67 is so arranged that whenA the plunger 68is at one end of its stroke, the axle 76 stands transversely to themachine; and when the plunger 68 is at the other end of its stroke, theaxle stands 80, which are pivoted to the frame 1 at 81.

These jacks 80 may be of any desired construction and similar to thejack 43. At the center of the machine, we provide a reservoir 82 for thecompressed air sup` plied by air pump 40, from which reservoir the airmay be led to jacks 43 and .80 by suitable flexible pipe connections,which we have not shown in detail.' Vertical saw 19 is adapted to beforced sidewise into the coal, and then traversed en'dwise through th'ecoal, so that it is supplied with a double set of cutters to permit ofthis action. The saw consists of a blade 88, secured by the rivets 84 tothe flange 85 on the shaft 16. A series of radial slotsA 86, 87, and 88are formed in the blade 19. 'The slots 86 occupy the outer third of theradius of the saw. The slots 87 occupy the middle third of the radiusand the slots 88 the inner third of the radius. The slots 86, 87, and 88are at approximately equal angles to each other as shown. The 'shape ofthe slots is shown in section in Fig. 5, which also shows the cutters89, which have the cutting points 90. At the outer end of slots 86, aset screw 91 is provided to lock the outer cutter in position. Thecutters in slots 87 and 88 are introduced through the holes 92, whichare plugged with a piece of wood after the introduction of the cuttersfThe saw blade '83 is provided with holes 93 to facilitate the egress ofthc cuttings through the slot 94 which is cut in the coal by the saw 19.

Around the circumference of theI blade 83 there are formed a serios ofslots'fl, containing' the cutters 96, which are held in place by thewedges 97. are preferably formed on the right hand, left hand, andcenter' as shown at 96, 96, and 96C. The height of the cutting pointSecured to the forward end of the These cutters 96 l mettete 90 ofcutter B9 measured ifi-om the tace or the sew blsde 83 is less than theheight of the cutting points on cutters 96, measured frein the saineface, so that when the saw isV cutting edgewise, the cutters 89 are notin action. in Figs.. 12 and 13, We heveshown a modified construction,consisting of two vertical saws and two horizontal saws instead of twohorizontal saws and one vertical saw as shown in lig, 3. The object ofthis modification is to lessen the amount of slack which is made whenthe vertical saws are forced sidewise into the coal in order to begintheir cut. When this modification is.

Y' secured to the shaft 110, which is supported in the bearings lll'and112. Mounted on the shaft 110 is the spur gear 113 meshing with the spurgears 1111 on the shafts 100. lt is obvious that power being applied tothe shaft 110,l same Will be transmitted to the spur gears 113, and 114of the vertical saws 102 and through the bevel gears 109 and 108 ofthehorizontal saws 106.

The operation of our improved machine `is as follows z-The mschine isInadeto propeliitself to the desired location in the mine by means ofthe drive chains 30. Upon arriving et the Working place, the front endof the machine is placed close to the side of the entry er room with thevertical saw close up against the coal. The clamping ja l; 13 is thenput under the influence of duid pressure so as to rigidly 'fasten therear end oi the machine to the roof and' licor of the ruine. Fluidpressure is then edinitted to the cylinder 58, which by the action ofthe connecting parts causes the front end of the machine to travel intothe coal, the top und bottom saws 8 end 12 cutting slots at the top andbottoni of the coel seam, and the vertical saw 19 acting like an endmilling cutter, grinding up the coal into slack .fis

the suiv 'l0 is further advanced into the coal,`

this slaclr falls through the holes 93 in the saw blade 83 to the insideof the saw. Alter the saw 10 has been advanced into the coal.

a distance equal to the stroke or the cylinder 5Fl, or any otherconvement distance, the

cylinder lis relieved from the action ot the iluid prcssureyxnd one ofthe jacks 80 is swung; agfainst 'the' Wall s0 as to be in position topush, the front end of the machine sidevvise. The application of fluidpressure to this jeclr then swings the-iront end of the machine acrossthe room or entry, themachiue being pivoted rigidly by the jack 43, andthe front truck Wheels 77 being in the position shown in Fig. 3. Thisaction results in the cutting of parallel horizontal slots across :theface of the entry by the top and bottom saws 8 and 12, and a curvedvertical slot by the vertical saw 19; at the seme time the cutters 20 onshaft 16 dig out the coal in advance ci the shaft 16 so as to makeclearance for the saine. The result of thus swinging the machine acrossthe entry is shown .in Fig. 11, in which 1.15 is the hole bored by thevertical saw 19'; 116 is the slot cut by the cutters 20. on the shaft16, and 117 is the vertical slot eut'by the saw 19 when swung across theface of the entry.

The slots cut by saws 8 and 12 are shown yet 118 and 119. It is obviousthat the coal having been cut from its originalbed on three sides may beeasily dislodged by Wedging, or With a pick, or by any suitablemachinery, and that an entry or room of in definite length can be minedby the above process entirely Without the use of explosives. lt will befurther obvious that ab though a considerable portion of the coal isground up into slack by the action of the l saw 19, yet the remainingcoal is in such a condition that it vmay be readily removed in largelumps. it is also obvious that many other arrangements and parts mightbe substituted by a skilled designer for those shown by us, Withoutdeparting from the spirit of our invention, which is covered by the'followingu claimstl. In a mining machine, s. circular saw mounted in ahorizontal shaft, seid shaft being movable forward and sidewise, teethon one side of the saw to cut when the saw is fed forward in a directionarallel to the shaft, teeth on the edge of t e saw to cut When-the sawis fed sidevvise at right angles to the shaift,'means for drivin saidsaw,

means for feeding it forward an means for feeding it sidewise.

2. ln a mining machine, a circular saw mounted on a horizontal shaft,said shaft being movable forwerdsnd sidewise, teeth on one side and theedge of the sew, teeth on. the shaft adapted to cut clearance therefor,means for driving; the sheft, means for eeding it toi-Ward, end ineensfor feeding it sidewise.

3. In a mining machine, a vertically arsaw on each of4 the aboveelements into the coal in-'a direction parallel 'to the horizontal shaftand means for moving the same laterally therein.

5. In a mining machin'efa frame pivoted at its rear end, a vertical sawand two horizontal Vsaws mounted onfthe -front end of 4said frame, meansfor advancing said saws l into the coal, means for driving said saws,

and means for swinging-said frame about said pivot.

6. Ina mining machine, a iframe, a vertical and two .horizontal sawsmounted thereon, said saws having theirl axes in a common f verticalplane, and a fluid pressure cylinder y and in line with saidl firstvertical shaft, a

horizontal saw thereon, means for driving said horizontal shaftand bevelgears connecting said horizontal and vertical shafts.

9. In a mining machine, a frame pivoted to its rear end, a plurality ofsaws carried.

thereby to cut the cm1, a clamping jack adjumbly connected to vSaid frm,means for clamping said jack, 4means for .pushing said frame forwardagainst the resistance ofsaid jack when clamped,fmeans for drawingsaidJack toward the machine when not clamped,

andrmeans for swinging 'said'frame about its pivot.

10. In a mining means for drivin "said saws, a lpneumatic cylinder forfeedlngthe machine forward,

and a pneumatic cylinder for swinging the frame' about its pivot.

11. In a mining machine, a frame, :a horil zontal shaft, a vertical sawand a bevel driv ing gear thereon, two vertical shaftsxeach having ahorizontal saw thereon, and amachine, pivoted frame; a motor :mountedthereon, an vair pum driven thereby, saws for cutting the -coa ,-1

driven bevel gear on each vertical shaft meshing with said bev-eldriving gear, means l for driving said horizontal shaft and meansformoving said frame to feed said saws to make their cuts.

l2. In a mining machine, a frame, l guide .secured thereto, a slideworking in, said guide and supporting the rear end of the machine, anaxle secured to -said slide, f

wheels on said axle, a motor and connections from said motor to saidwheels to drive the A latter. 4

- HARRY A. KUHN.

WALTER W. MACFARREN.

Witnesses:

Cms. Lox'rnRMAN, EMM. Jonson.

